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IRINA_888 [86]
3 years ago
7

I have four dogs whose average weight is 63 pounds. I also have three cats. The average weight of all seven of my animals is 41

pounds. What is the average weight of my cats?
Mathematics
1 answer:
Brums [2.3K]3 years ago
8 0

Answer: 11.67 pounds

Step-by-step explanation:

From the question, the person have four dogs whose average weight is 63 pounds. Then, the total weight of the dogs will be:

= 63 pounds × 4

= 252 pounds

There are also three cats and the average weight of all seven of my animals is 41 pounds. This means that the total animals have a title weight of:

= 41 pounds × 7

= 287 pounds.

To get the weight of the cats, we subtract the total dog's weight from that of the whole animals. This will be:

= 287 - 252

= 35 pounds.

Since there are 3 cats, their average weight will be:

= 35/3

= 11.67 pounds

The average weight of the cats is 11.67 pounds.

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8x - 17 = -26x
then in hers she added the 8 to 26 when she should have subtracted it
it should be -17 = -34x
so 17 = 34x
1/2 = x
7 0
3 years ago
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Kate baked a berry pie. The recipe called for 7 ounces of blackberries, 7 ounces of raspberries, and 6 ounces of strawberries. I
saul85 [17]

Answer:

Step-by-step explanation:

The recipe for baking a berry pie called for 7 ounces of blackberries, 7 ounces of raspberries, and 6 ounces of strawberries.

Since she only found 12-ounce containers of berries, she bought 1 container of each kind of berry.

After she baked the pie,

The number of ounces of blackberries left would be 12 - 7 = 5 ounces.

The number of ounces of raspberries left would be 12 - 7 = 5 ounces.

The number of ounces of strawberries left would be 12 - 6 = 6 ounces.

Total number of ounces of berries that Kate has left would be

5 + 5 + 6 = 16 berries

3 0
3 years ago
The volume of the above figure is?
Ne4ueva [31]
D. 2744 cm^3

Soultion no. 1

If you put the figure sideways you get a prism (with the two dark triangles as bases) and the formula for the volume is

V = BH (where B is the area of the base and H is the height, 49)

The area of the triangle is

P = (8*14)/2 (half the area of a rectangle with sides 8 and 12) which is:

P = 8*7 = 57

The volume is:

V = 57 * 49 = 2744

Solution no. 2

The figure has half the volume of a rectangular prism with sides 8, 14 and 49
Which is:

V = (8*14*49)/2 = 2744







7 0
4 years ago
Help me please i don’t understand
LenaWriter [7]

Answer:

90

Step-by-step explanation:

There are 10 red candies, 18 green candies, 9 yellow candies, and 13 brown candies.

10 + 18 + 9 + 13 = 50.

There is a total of 50 candies. Out of the 50 candies, 18 are green.

\frac{18}{50} \\

You have to get to 250 .That means you do  \frac{18}{50}  = \frac{x}{250}

250 divided by 50 = 5.

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4 0
3 years ago
A student wants to study the ages of women who apply for marriage licenses in his county. He selects a random sample of 94 marri
brilliants [131]

Answer:

The confidence interval for the mean is given by the following formula:

\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}   (1)

For this case the confidence interval obtained is: (23.6 ; 27.3)

And the best interpretation would be:

We have 95% of confidence that the true mean os ages of women who apply for marriage licenses in his county is between 23.6 and 27.3

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

\bar X represent the sample mean for the sample  

\mu population mean (variable of interest)

s represent the sample standard deviation

n=94 represent the sample size  

Solution to the problem

The confidence interval for the mean is given by the following formula:

\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}   (1)

For this case the confidence interval obtained is: (23.6 ; 27.3)

And the best interpretation would be:

We have 95% of confidence that the true mean os ages of women who apply for marriage licenses in his county is between 23.6 and 27.3

5 0
3 years ago
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